H1Z2Z2-K 4.0mm2 Photovoltaic Solar Cable TUV 1500V XLPE Copper Cable
Product Summary
Product Details
4.0mm2 photovoltaic solar cable
,photovoltaic solar cable tuv
,1500v xlpe copper cable
Product Description
H1Z2Z2-K 4.0mm² TUV 1500V DC Solar Cable UV Resistant Halogen Free XLPE Copper
Cable Designation & Meaning
|
Code |
Meaning |
|---|---|
|
H |
Harmonized cable (H) |
|
1 |
Rated voltage 1 kV AC (U₀/U = 1/1 kV reference) |
|
Z |
Halogen-free compound (Z = halogen-free) |
|
2 |
Insulation layer — cross-linked halogen-free compound (XLPO) |
|
Z |
Halogen-free compound (Z = halogen-free) |
|
2 |
Sheath layer — cross-linked halogen-free compound (XLPO) |
|
2 |
Sheath layer — cross-linked halogen-free compound (XLPO) |
|
K |
Flexible conductor (Class 5 fine-stranded) |
|
4.0 mm² |
Nominal cross-sectional area of conductor |
Construction: Tinned copper conductor, halogen-free cross-linked polyolefin (XLPO) insulation and sheath, single-core flexible photovoltaic DC cable.
Note on designation: H1Z2Z2-K is the EN 50618 / TÜV 2 PfG 1169/08.2007 designation. It is functionally equivalent to PV1-F 6.0 mm² but uses the harmonized cable coding system.
Applicable Standards
- EN 50618:2014 — Electric cables for photovoltaic systems (DC rated voltage 1.8 kV)
- IEC 62930 — Photovoltaic system cables (single-core, XLPO insulated, rated up to 1.5 kV DC)
- TÜV 2 PfG 1169/08.2007 — TÜV specification for PV cables
- IEC 60228 / GB/T 3956 — Conductors (Class 5 flexible, tinned copper)
- IEC 60332-1 — Flame retardant (single cable)
- IEC 61034 — Smoke density (low smoke)
- IEC 60754 — Halogen content (halogen-free)
- IEC 60811 — Insulating and sheathing materials — Common test methods
H1Z2Z2-K 4.0 mm² — Single-Core Halogen-Free Photovoltaic Cable — Specification & Engineering Data
1. Overview & Ratings. H1Z2Z2-K 4.0 is a single-core, halogen-free, cross-linked polyolefin (XLPO) insulated and sheathed photovoltaic cable with a fine-stranded tinned copper conductor. Rated DC 1.5 kV (AC 0.6/1 kV), 90 °C continuous. Built and certified per EN 50618 / TÜV 2 PFG 1169. Designed for PV module interconnection and string wiring. Finished Ø ≈ 6.0 mm, ≈ 52 kg/km, supplied on coils.
2. Construction Stack (Conductor → Outer).
| Layer | Build | Wall | Diameter |
|---|---|---|---|
| Conductor | Fine-stranded tinned Cu, Class K, 4.0 mm² | — | ≈ 2.8 mm |
| XLPO insulation | Cross-linked polyolefin, halogen-free | ≈ 0.9 mm | ≈ 4.6 mm |
| XLPO jacket | Halogen-free, UV-resistant, weatherproof | ≈ 1.1 mm | ≈ 6.0 mm (finished) |
3. Electrical Characteristics. DC resistance ≤ 4.57 Ω/km at 20 °C (tinned Cu 4.0 mm²); test voltage 3.0 kV AC / 5 min; insulation resistance ≥ 2000 MΩ·km. Nominal ampacity ≈ 45 A (free air, 30 °C). Voltage drop ≈ 2.1 V/A·100 m.
Insulation & Sheath Data
|
Property |
Value |
|---|---|
|
Material |
XLPO (cross-linked polyolefin), halogen-free |
|
Insulation nominal thickness |
0.8 mm |
|
Sheath nominal thickness |
0.8 mm |
|
Long-term service temp. |
−40 °C to +120 °C (continuous) |
|
Short-circuit temp. (≤5 s) |
280 °C (Cu conductor limit) |
|
Emergency overload temp. |
150 °C (short term) |
|
Weather resistance |
Excellent — UV resistant, ozone resistant, hydrolysis resistant |
|
Flame retardant |
IEC 60332-1 (single cable) |
|
Smoke density |
IEC 61034 (low smoke) |
|
Halogen content |
IEC 60754 (halogen-free, non-corrosive) |
|
Oil resistance |
EN 50618 Annex B (optional) |
|
Acid & alkali resistance |
Good |
Electrical Parameters
|
Parameter |
Value |
Note |
|---|---|---|
|
Rated voltage AC (U₀/U) |
1.0 / 1.0 kV |
EN 50618 reference (AC rating) |
|
Rated voltage DC |
1.5 kV |
EN 50618 / IEC 62930 primary rating |
|
Test voltage AC (50 Hz, 5 min) |
6.5 kV |
Routine test |
|
DC test voltage |
15 kV DC (for type test) |
— |
|
DC resistance @20 °C |
≤ 3.39 Ω/km |
IEC 60228 Class 5 max, 6.0 mm² |
|
AC resistance @90 °C (est.) |
≈ 4.32 Ω/km |
— |
|
AC resistance @120 °C (est.) |
≈ 4.86 Ω/km |
max service temp |
|
Capacitance (approx.) |
≈ 0.21 µF/km |
conductor to sheath |
|
Inductive reactance (approx.) |
negligible |
single-core DC application |
|
Current rating in free air (60 °C ambient) |
70 A |
single cable, DC |
|
Current rating in free air (ambient corrected) |
≈ 56 A at 70 °C ambient |
typical rooftop condition |
|
Current rating in conduit (air) |
≈ 52 A |
bundled cables |
|
Short-circuit current (1 s, Cu, 280 °C) |
≈ 0.66 kA (660 A) |
6.0 mm² Cu |
|
Frequency |
DC (primary) / 50–60 Hz AC (secondary) |
— |
Reference values: 6.0 mm² Cu at 56 A, DC 1000 V → max DC power ≈ 56 kW per string (2 strings in parallel = 112 kW). Voltage drop at 56 A ≈ 19.0 mV/A·m (≈1.90% per 10 m at 56 A, 1000 V). At 70 A → ≈ 23.7 mV/A·m.
Temperature Characteristics
|
Property |
Value |
|---|---|
|
Max. conductor operating temp. (continuous) |
120 °C |
|
Max. short-circuit temp. (≤5 s) |
280 °C (Cu conductor) |
|
Emergency overload temp. |
150 °C (short term) |
|
Min. installation ambient temp. |
−40 °C (cold-flexible, no pre-heating required) |
|
Service ambient range |
−40 °C to +120 °C (with XLPO) |
|
Fire survival |
Standard (flame retardant single cable); optional fire-rated version available |
4. Thermal & Environmental. 90 °C continuous conductor temperature; 250 °C short-circuit (≤ 5 s); ambient range −40~+90 °C; laying ≥ −20 °C. Temperature cycle −40~+120 °C. Excellent UV, ozone, and weather resistance. Halogen-free, low smoke.
Fire Performance (H1Z2Z2-K — Standard)
|
Property |
Value / Requirement |
|---|---|
|
Flame retardant |
IEC 60332-1 (single cable, passes) |
|
Halogen content |
Halogen-free (IEC 60754) |
|
Smoke density |
Low smoke (IEC 61034) |
|
Corrosivity |
Non-corrosive (IEC 60754) |
|
Toxicity |
Low (halogen-free materials) |
|
Fire survival (circuit integrity) |
Not applicable (standard PV cable); use fire-rated DC cable if required |
5. Installation Practice & Handling. Bend ≥ 6 × OD ≈ 36 mm fixed. Use MC4-compatible crimping tools. At 52 kg/km, lightweight and flexible for rooftop module routing. Red cable for positive (+), black for negative (−).
Mechanical & Installation Parameters
|
Parameter |
Value |
Remarks |
|---|---|---|
|
Minimum bending radius |
≥ 4 × OD → ≈ 25.2 mm at Ø6.3 mm |
static installation |
|
Min. bending radius (installed) |
≥ 2 × OD → ≈ 12.6 mm |
dynamic (flexing) |
|
Max. pulling tension |
240 N |
fine-stranded Cu, use proper grips |
|
Direct burial |
Suitable (UV & moisture resistant) |
— |
|
Conduit ID |
≥ 1.5 × OD → ≥ 9.5 mm; use 16 mm, 20 mm or 25 mm |
— |
|
Fixing |
cable ties (UV-resistant), clamps |
— |
|
Impact resistance |
Moderate |
flexible cable, not armoured |
|
Water resistance |
Excellent (XLPO sheath, IP67 rated connectors) |
suitable for outdoor/wet |
|
UV resistance |
Excellent (EN 50618, 720 h UV test) |
outdoor exposed |
|
Ozone resistance |
Excellent (IEC 60811-403) |
— |
|
Termination note |
Use MC4 connectors (compatible 6.0 mm²) or copper lugs |
strip length 10–12 mm |
6. Typical Service Applications. PV module interconnection, string wiring, combiner box input — rooftop and ground-mount solar power systems, shorter string runs, lower-current PV arrays.
7. Testing & QA Regime. Routine: conductor DC resistance, 3.0 kV AC / 5 min withstand, insulation resistance. Type: UV aging per EN 50618, temperature cycle, flame retardancy IEC 60332-1, halogen acid gas content IEC 60754, cold bend at −40 °C.
Cable Parameters
| H1Z2Z2-K 1×4.0 mm² — Harmonised PV DC Cable — Full Parameter Sheet | ||||
| Harmonised PV cable · tinned copper flexible (Class 5) / double-layer halogen-free · 0.6/1.0 kV DC · IEC 60332-1 · HAR certified · EN 50618 / HD 6036 · finished Ø ≈ 6.4 mm | ||||
| Section | Parameter | Value | Unit | Remarks / Standard |
| 01 · Identification | ||||
| Cable type | H1Z2Z2-K | — | Harmonised European PV cable, single core, flexible | |
| Rated voltage (U0/U) | 0.6/1.0 | kV | DC; for PV array interconnection | |
| Number of cores | 1 × 6.0 | — | Single core (one + and one − per string) | |
| Conductor material | Tinned annealed copper | — | Class 5 flexible per EN 60228 | |
| Insulation material | Halogen-free cross-linked polyethylene (XLPE) | — | Z2 = halogen-free, UV/ozone resistant | |
| Outer sheath material | Halogen-free cross-linked polyolefin | — | Z2 = halogen-free, weather jacket | |
| Flame retardancy | IEC 60332-1 (single-cable) | — | Self-extinguishing | |
| Certification | HAR (harmonised) | — | EN 50618 / HD 6036 harmonised standard | |
| 02 · Conductor (Tinned Copper) | ||||
| Stranding — 6.0 mm² | Flexible stranded tinned copper | — | Class 5 per EN 60228 | |
| Strand count (typical) | 50 × 0.40 | mm | Tinned copper wires | |
| Conductor diameter | ≈ 3.2 | mm | After stranding (est.) | |
| DC resistance @ 20 °C | ≤ 3.08 | Ω/km | Maximum per EN 60228 Class 5 | |
| Conductor screen | None | — | LV DC cable | |
| Conductor weight per km | ≈ 62 | kg/km | Copper density 8.89 g/cm³ | |
| 03 · Insulation & Sheath (Double-Layer) | ||||
| Inner insulation type | Halogen-free cross-linked polyethylene (XLPE) | — | Z2 = halogen-free | |
| Inner insulation thickness | 0.8 | mm | Nominal | |
| Outer sheath type | Halogen-free cross-linked polyolefin | — | Z2 = halogen-free | |
| Outer sheath thickness | 0.8 | mm | Nominal | |
| Finished outer diameter | ≈ 6.4 | mm | 3.2 + 2×0.8 + 2×0.8 | |
| Colour | Black (standard) | — | UV-resistant carbon-black | |
| 04 · Electrical | ||||
| Rated voltage (DC) | 0.6/1.0 | kV | Max system voltage 1.8 kV DC | |
| DC resistance @ 20 °C | ≤ 3.08 | Ω/km | 6.0 mm² Cu Class 5 | |
| Insulation resistance | ≥ 250 | MΩ·km | XLPE at 20 °C | |
| Conductor loss (at 60 A) | ≈ 4.2 | W/m | I²R at 90 °C | |
| Routine test voltage (AC) | 3.5 kV / 5 min | — | Power-frequency withstand | |
| Voltage test (DC) | 6.5 kV / 15 min | — | DC withstand test | |
| 05 · Thermal & Weather | ||||
| Max continuous conductor temp. | 90 | °C | Standard rated | |
| Short-circuit temp. (≤ 5 s) | 250 | °C | XLPE limit | |
| Min installation temp. | -40 | °C | Cold-bend test | |
| Service ambient range | -40 to +90 | °C | European / temperate climates | |
| UV resistance | 1000 h UV preconditioning | — | Per EN 50618 | |
| Ozone resistance | Yes | — | Tested per EN 50618 | |
| Halogen-free | Yes | — | Z2 = halogen-free (IEC 60754) | |
| Flame retardancy | IEC 60332-1 (single-cable) | — | Self-extinguishing | |
| 06 · Mechanical | ||||
| Min bending radius (fixed) | ≥ 4 × OD ≈ 26 | mm | Flexible cable | |
| Min bending radius (flexing) | ≥ 6 × OD ≈ 38 | mm | If repeatedly moved | |
| Tensile strength (insulation) | ≥ 15.0 | MPa | After ageing at 135 °C | |
| Abrasion resistance | Yes | — | Tinned strands resist oxidation | |
| Oil / fuel resistance | Limited | — | Avoid prolonged contact | |
| 07 · Ampacity | ||||
| Air ampacity (open, 30 °C) | ≈ 60 | A | Single core, free air (est.) | |
| Air ampacity (open, 60 °C) | ≈ 47 | A | Derating at high ambient | |
| Voltage drop (per 100 m @ 60 A) | ≈ 3.6 | V | Two-pole loop ≈ 7.3 V | |
| 08 · Installation | ||||
| Laying methods | Rooftop PV, ground-mount PV, cable tray, conduit | — | Indoor / outdoor / UV | |
| Connectors | PV4 / MC4-type | — | Crimped with dedicated tool | |
| Polarity | Marked on sheath | — | + / − printed along length | |
| Special tools | PV crimper, cable cutter, torque wrench | — | MC4 connectors require dedicated tool | |
| 09 · Packing | ||||
| Standard supply length | 100 m / coil | m | PV field wiring | |
| Reel / packing type | Coil / wooden drum | — | Sealed ends against moisture | |
| Surface marking | H1Z2Z2-K, 1×6.0, 0.6/1.0 kV, +/−, HAR, metre marks, year | — | Continuous printing | |
| Storage conditions | Dry, covered, −20 to +40 °C | — | Protect from UV during storage | |
| 10 · Applications | ||||
| Typical use | Utility-scale ground-mount PV, commercial rooftop PV, large-scale PV plants, industrial PV, main PV DC trunking | — | DC interconnection in PV arrays | |
| Max system voltage | 1.8 | kV DC | Open-circuit Voc at lowest temp | |
| String current rating | Up to 60 | A | Per string fusing | |
Cable Test Parameters
| Test Parameters — H1Z2Z2-K 1×4.0 mm² | ||||
| No. | Test Item | Test Condition / Method | Requirement | Type |
| 1 | Conductor DC resistance | EN 60228, 20 °C | ≤ 3.08 Ω/km (6.0 mm² Cu) | Routine |
| 2 | Power-frequency withstand | 3.5 kV AC, 5 min | No breakdown | Routine |
| 3 | DC withstand test | 6.5 kV DC, 15 min | No breakdown | Routine |
| 4 | Insulation resistance | At 500 V DC, 20 °C | ≥ 250 MΩ·km | Routine |
| 5 | Dimensional check | Micrometer | Inner insulation ≥ 0.8 mm; outer sheath ≥ 0.8 mm; OD ≈ 6.4 mm | Routine |
| 6 | UV preconditioning | 1000 h UV exposure | No cracking / embrittlement | Type |
| 7 | Thermal ageing | 168 h at 135 °C | No cracking after bend test | Type |
| 8 | Cold bend test | −40 °C, mandrel 4×OD | No cracks | Type |
| 9 | Heat shock | 15 min at 150 °C | No cracking | Type |
| 10 | Single-cable flame | IEC 60332-1 vertical flame | Self-extinguishing | Type |
| 11 | Halogen acid gas | IEC 60754-1/-2 | ≤ 0.5% HCl equivalent | Type |
| 12 | Smoke density | IEC 61034-2 | Light transmittance ≥ 60% | Type |
| 13 | Ozone resistance | Ozone chamber test | No cracking | Type |
| 14 | Abrasion resistance | Tape abrasion test | Per EN 50618 | Type |
| 15 | Tinned copper check | Strip test on strands | Uniform tin coating | Routine |
| 16 | Conductor continuity | Per EN 60228 | All strands continuous | Routine |
Cable Cross Section Structure
| H1Z2Z2-K 1×4.0 mm² — Cross-Section Construction Diagram (Schematic) | |||||
| Harmonised PV cable build-up: tinned copper flexible conductor → inner halogen-free XLPE insulation → outer halogen-free sheath · 0.6/1.0 kV DC · finished Ø ≈ 6.4 mm | |||||
| No. | Layer | Material / Construction | Nominal Thickness (mm) | Diameter (mm) | Function / Remarks |
| 1 | Conductor | Flexible stranded tinned copper, Class 5 — 50 × 0.40 mm | — | ≈ 3.2 | Power conductor; R ≤ 3.08 Ω/km at 20 °C |
| 2 | Inner insulation | Halogen-free cross-linked polyethylene (XLPE), Z2 | 0.8 | ≈ 4.8 | Main electrical insulation; halogen-free |
| 3 | Outer sheath | Halogen-free cross-linked polyolefin, Z2, black | 0.8 | ≈ 6.4 (finished) | Weather jacket; UV/ozone resistant |
| 4 | (No armour) | — | — | — | Unarmoured — flexible cable for PV use |
| Key Dimensions & Properties (expanded) | |||||
| Finished cable diameter | ≈ 6.4 | mm | 3.2 + 2×0.8 + 2×0.8 | ||
| Approx. cable mass | ≈ 68 | kg/km | Cu + XLPE + halogen-free sheath | ||
| Nominal voltage rating | 0.6/1.0 | kV DC | PV array DC | ||
| Max system voltage | 1.8 | kV DC | Open-circuit Voc | ||
| Max continuous conductor temp. | 90 | °C | Standard rated | ||
| Short-circuit temp. (≤5 s) | 250 | °C | XLPE limit | ||
| Min installation temp. | -40 | °C | Cold-bend tested | ||
| Min bending radius | ≥ 4 × OD ≈ 26 | mm | Fixed installation | ||
| DC resistance @ 20 °C | ≤ 3.08 | Ω/km | 6.0 mm² Cu Class 5 | ||
| Insulation resistance | ≥ 250 | MΩ·km | XLPE | ||
| Routine test voltage (AC) | 3.5 kV / 5 min | — | Power-frequency withstand | ||
| Routine test voltage (DC) | 6.5 kV / 15 min | — | DC withstand | ||
| Air ampacity @ 30 °C | ≈ 60 | A | Single core, free air (est.) | ||
| Flame retardancy | IEC 60332-1 | — | Single-cable vertical flame | ||
| Halogen-free | Yes (Z2) | — | IEC 60754 / IEC 61034 | ||
| UV resistance | 1000 h | — | Per EN 50618 | ||
| Schematic — not to exact scale. Finished Ø ≈ 6.4 mm and weight ≈ 68 kg/km from cross-referenced industry samples; conductor/insulation dimensions per EN 50618 and EN 60228; ampacity 60 A is an engineering estimate for single core in free air. This H1Z2Z2-K 6.0 mm² is the harmonised European equivalent of PV1-F 6.0 mm², but with a double-layer construction (inner halogen-free XLPE insulation + outer halogen-free cross-linked polyolefin sheath) instead of PV1-F's single-layer insulation. The double-layer design provides better weather resistance and longer outdoor service life. Always use PV4/MC4-type connectors crimped with the dedicated tool. Values marked (est.) require confirmation against the factory test certificate. | |||||
Construction Description
| Construction Description — H1Z2Z2-K 1×4.0 mm² | |||
| Layer-by-layer PV build-up · tinned copper flexible / double-layer halogen-free · 0.6/1.0 kV DC · finished Ø ≈ 6.4 mm | |||
| 1. Product Identity & Ratings | |||
| H1Z2Z2-K 1×6.0 is the harmonised European photovoltaic DC cable rated 0.6/1.0 kV DC (max system voltage 1.8 kV), built and certified to EN 50618 / HD 6036 with the HAR certification mark. It uses a double-layer construction — inner halogen-free XLPE insulation plus outer halogen-free cross-linked polyolefin sheath — which distinguishes it from PV1-F's single-layer design. Finished diameter is about 6.4 mm, mass about 68 kg/km, and it is supplied in 100 m coils for PV field wiring. | |||
| 2. Tinned Copper Flexible Conductor | |||
| The 6.0 mm² conductor is Class 5 flexible stranded tinned copper — 50 individual 0.40 mm tinned wires — giving a conductor diameter of about 3.2 mm and a maximum DC resistance of 3.08 Ω/km at 20 °C. The fine-strand construction gives the cable excellent flexibility for routing on rooftop racks and in ground-mount PV arrays, and the tin plating protects the copper strands against oxidation and atmospheric corrosion over decades of outdoor service. | |||
| 3. Inner Halogen-Free XLPE Insulation | |||
| The conductor is fully enclosed in a 0.8 mm layer of halogen-free cross-linked polyethylene (XLPE). This inner layer provides the primary electrical insulation and withstands the 3.5 kV AC routine test. The Z2 designation means the insulation contains no halogen compounds. The irradiation process cross-links the polymer chains, giving XLPE a 90 °C continuous conductor temperature rating (short-circuit up to 250 °C for ≤ 5 s). | |||
| 4. Outer Halogen-Free Sheath | |||
| Over the inner insulation is a 0.8 mm layer of halogen-free cross-linked polyolefin. This outer sheath provides mechanical protection against abrasion, UV radiation, ozone, and weathering — a role that PV1-F's single-layer insulation must perform by itself. The black carbon-loaded formulation is UV-resistant (1000 h UV preconditioning per EN 50618). The double-layer design means the inner layer handles electrical insulation while the outer layer handles weather protection, giving better long-term outdoor reliability than single-layer PV cables. | |||
| 5. Site Handling & Operational Notes | |||
| • Use PV4 / MC4-type connectors crimped with the dedicated PV crimping tool — never substitute generic lugs. • Observe the 4 × OD minimum bend radius (≈ 26 mm); if flexed repeatedly, use 6 × OD. • Service range −40 to +90 °C; conductor up to 90 °C continuous. • Routine test 3.5 kV AC / 5 min. • UV preconditioning: 1000 h UV exposure per EN 50618. • Halogen-free: IEC 60754 acid gas ≤ 0.5% HCl; IEC 61034 smoke transmittance ≥ 60%. • At about 6.8 kg per 100 m, the cable is supplied in 100 m coils — suitable for commercial rooftop and ground-mount PV strings with longer home-runs. |
8. Factory Advantages
9. Packaging, Storage & Logistics. 500 m per plastic spool with sealed ends. Continuous marking: H1Z2Z2-K, 4.0mm², 1.5kV, EN 50618, metre marks. Store dry, UV-protected, indoors.
10. Procurement Specification. State "H1Z2Z2-K 4.0, red/black" + length. Order matching MC4 connectors. Confirm against TÜV certification and factory test report.
11. Cable Industry FAQ.
- Q1: What is the difference between H1Z2Z2-K 4.0 and H1Z2Z2-K 6.0? Same halogen-free XLPO insulation and UV-resistant jacket. The differences are: conductor area (4.0 vs 6.0 mm²), outer diameter (6.0 vs 7.5 mm), weight (52 vs 78 kg/km), ampacity (45 vs 60 A), and DC resistance (4.57 vs 3.08 Ω/km). Choose 4.0 mm² for shorter string runs; choose 6.0 mm² for longer runs where voltage drop matters.
- Q2: What does "H1Z2Z2-K" mean? H = harmonized cable; 1 = rated 1.8 kV test; Z2 = halogen-free cross-linked insulation; Z2 = halogen-free cross-linked jacket; K = fine-stranded flexible conductor (Class K per EN 60228).
- Q3: Why is the conductor tinned? Tinning prevents copper corrosion in outdoor PV environments where rain, humidity, and salt spray are present.
- Q4: What does "halogen-free" mean? The cable contains no chlorine, bromine, or other halogens. If a fire occurs, it emits low-smoke, non-corrosive gases — important for enclosed PV combiner boxes.
- Q5: Can I use regular RVV cable for PV? No — RVV is not UV-resistant and will degrade outdoors within 1–2 years. PV cables must have UV-stabilized XLPO jacket rated for outdoor exposure.
- Q6: What bending radius is required? 6×OD ≈ 36 mm fixed. The fine-stranded K-class conductor makes the cable very flexible.
- Q7: What connectors are used? MC4-compatible connectors are standard for PV. The cable must be crimped with the correct PV crimping tool for waterproof connections.
- Q8: Why red and black? Red = positive (+), black = negative (−), per PV industry standard. This prevents reverse polarity at the inverter.
- Q9: What is the maximum string length? Depends on voltage budget. At 4.57 Ω/km, the 4.0 mm² cable has higher resistance than 6.0 mm², so voltage drop limits string length. Calculate: V_drop = 2 × I × L × R_per_km.
- Q10: Can this cable be buried? Not directly — H1Z2Z2-K is not armored. For burial, use conduit or armored cable. It is designed for module-to-module and string-to-combiner wiring in open air.
- Q11: What is the expected lifetime? 25+ years outdoor exposure, per EN 50618 UV aging requirements. The XLPO material is specifically formulated for long-life outdoor PV service.
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